Filter



L S. KEITHL'N APPLscATlor: men mais', fwn

154365234. aizwe Sept. 26, 3.922.

Patented Sept. E6, 1922.

JOSEPH S. KEITHLINE, 0F ASKAM, PENNSYLVANIA.

FILTER.

Application tiled August 18, 19,21` Serial No. 493,334.

T0 ZZ ich-0m t -m (zy concern Be it known that I, JosnPH S. KEITHLINE, a citizen of the United States; and residing at Askam, county ofLuz'erne, State of Pennsylvania, have invented certain new and useful improvements in Filters, of which the following is a specification.

This invention relates to filtering devices adapted especially for filtering water supplied to buildings from a service main and is of the general type disclosed in my prior Patent No; 1.133.289 March 30, 1915. lts objects and advantages consist in the utmost simplicity of construction lessening the work and cost of manufacture and making installation very easy,'tlie simplicity of the operation necessary in removing the container for filtering material in order to sub- 1 stitutenew or fresh material and the efiiciency with which it performs its functions as a filter without getting out of order. rl `he novel features will be more fully understood from the following description and claims taken with the drawing.

The single figure of the drawing shows the outer cylinder or casing in section and the container for filtering material in full lines except at one corner where there is a partial section shown.

The invention in the form shown embodies an outer cylinder 10 which has a bore of uniform diameter and which is preferably made of cast iron. lt has open ends surrounded by radial flanges 11 for use in securing end closures 12 and 13 in place. Any suitable means such as the bolts 14 may be used to secure the end closures to the cylinder and suitable packing 15 may be inserted to make the joint tight. Midway of the length of the cylinder 10 there is an interior rib 16 which should be secured in fixed position and which is preferably made integral with the cylinder. The cylinder has an opening 17 near one end at the top to receive an inlet or supply pipe 18 for water and this supply plpe may be controlled by a valve 19.

At the other end of the cylinder and on the other side of the rib 16 there is an opening 2O adapted to receive the outlet or discharge pipe 21 leading to the building and this pipe may be controlled by a valve 22. At the bottom of the cylinder at one end there is an opening 23 to receive the valve controlled drain nozzle 24 and at the other end there is a similar opening 25 to receive the drain nozzle 26.

The container for filtering material which may be charcoal or coke consists'in the cylinder 217 of uniformi` diameter closed at one end and'having a removable closure 28 at the other end` The ldiameter of this container is materially less than the interior diameter of the outer cylinder 10 and this container is materially-shorter than the outer cylinder. It has rigidly secured to it around its central portion a collar 29 which has an outer diameter almost equal to the interior diameter of the outer cylinder so that the container may move endwise into the outer cylinder from either end until the collar 29 comes in contact with the rib 16 which will take place when the container is approximately in midway position. The meeting surfaces of the collar 29 and rib 16 are so formed as to make a substantially water tight joint when in close contact. The cylinder 27 is perforated throughout its surface except where the rib 16 and flange 29 are. As will Vbe seen by reference to the drawing the perforations 30 opposite the inlet pipe 18 and on that side of the collar 29 are somewhat larger than the perforations 31 opposite the outlet ipe 21 The closure 28 for the container 2i is easily removable and a coiled spring`32 is interposed between it and the .closure 12 for the outer cylinder when the container is in position for operation. This spring not only maintains the closure in position on the end of the container but in cooperation with the collar 29 maintains a water tight connection between the collar 29 and rib 16 and also supports and maintains the container in its proper position spaced from the interior of the outer cylinder.

It is believed that the operation of the de-l vice will be clear from the above statement of structure since the water entering through pipe 18 must pass into and longitudinally of the filtering material in the container 27 before it can escape and pass out through. the outlet pipe 21. The container may be. very easily and quickly removed by simply releasing and removing the end closure 12 and withdrawing it longitudinally in case it is desired to substitute new material for that previously used. The container furthermore may enter the cylinder from? either end and thus it is immaterial which one of the upper pipes constitutes the inlet and which the outlet since the container may be adjusted to suit the condition. The conwith an outer cylinder havin tainer 27 and its closure 28 may be made of brass, bronze orco per." l

Having describe the invention what is claimed asnew4 and desired to be secured by Letters Patent is:

1.In a filtering device the combination a removable end closure and longitudina ly spaced inlet and outletv openings of an inner. perforated cylindrical container for filtering -material spaced from the inner surface of the outer cylinder with substantial uniformity laterally, and means between and so connected to the outer periphery of thecontainer andthe inner periphery of the outer cylinder between said inlet and outlet openings as to prevent the passage of liquid from the inlet to the outlet in the space between said container and outer cylinder.

2. In a filtering device the combination with an outer cylinder having .a removable end closure and longitudinally spaced inlet and outlet openings of an inner perforated cylindrical container for filtering material spaced from the inner surface of the outer cylinder with substantial uniformity laterally, cooperating elements respectively on the outer surface of the container and on thel inner surface of the outer cylinder between its inlet and outlet openings adapted to permit the container to enter vwithin the outer cylinder until said elements come in contact and form a water tight closure across the space between the container and outer cylinder between the inlet and. outlet openings.

3. In a filtering ldevice the combination with an outer cylinder of uniform interior diameter having a removable end closure and inlet and outlet openings near opposite ends, of a perforated container for filtering material in said cylinder of uniform diameter materially less than the interior` diameter of the outer cylinder ,and of materiallyl less length, means between said cylinder and container substantially midway longitudinally for supporting said container spaced from the inner surfaces of the cylinder and for transversely closing the space. between the container and cylinder so formed as to permit.v the free movement of the container longitudinally into or out of the cylinder when the closure of the cylinder is removed.

4. In a filtering device the combination with an outer cylinder having a uniform interior diameter with an interior rib substantially midway of its length, a removable end closure andA inlet and outlet openings for water pipes on opposite sides of said rib, of a perforated cylindrical container for filtering material of uniform diameter less than that of the interior diameter of said cylinder and of less length ameter with open ends and inlet and outlet A openin s on one side near its opposite-ends respectively adapted for connection to water pipes, and drain openings on the opposite sides near theends, of an interior rib in said cylinder midway of its length, removable closures for the ends .of said cylinder, a container for filtering material in the forml of a perforated cylinder of less diameter than the inner surface lof said interior rib and of less length than said cylinder `whereby it may enter said c linder from either endl passing art way t rough the opening formed by said rib, an

y external collar carried by said container vat approximately midway of its length of such size and shape as to abut the side of said rib forminga water tight joint, and means for maintaining said container in lproper position in said cylinder. l

6. In a device of the class described the combination with an outer cylinder having open ends and an interior circular rib between its ends., of a perforated cylindrical container a filteringmaterial in said` outer cylinder spaced therefrom laterally -and at its ends having an open end and a collar on and surrounding it between its ends, the outer surfaces of said collar having such diameter as to fit in said outer cylinder and support the container therein and abut the side of the said interior rib, removable closures for the ends of the'outer cylinder, a removable closure for the open end'of the container, a spring interposed between vthe removable closure of the container and the end of the outer cylinder tending tojmaintain the closure of the container in position and the collar of the container in close a water inlet connection for said outer cylinice i'io

der on one side of its rib and a water outlet from said outer cylinder onA the other side of said rib.

' In testimony whereof I hereunto affix my signature. i

JOSEPH s. KEiT'HLiNE. 

